You can clone with
HTTPS or Subversion.
Are you still working on this project?
I'd like to tell you that it's very inspiring, as well as the blog, and it made me begin a GBA emulator.
So I was wondering if you could provide some homebrews on the main page, that can be run in one click?
I made this myself: I gathered almost 700 ROMs with the permission of the authors and I plan to make them playable directly from the project's page, as soon as they work properly.
(nothing much yet, but it's coming...)